Description
Angstadt Arms built the Ultra Light for folks who want their compact AR to feel as balanced and nimble as it looks. This is a 5.5-inch free-float handguard machined from aluminum and finished in a mil-spec hard coat black anodize, and it tips the scales at right around 5.3 ounces with all the hardware in place. That kind of weight savings up front makes a real difference on a short pistol-length build where every ounce toward the muzzle changes how the gun handles.
What Sets the Ultra Light 5.5" Apart
The standout feature here is the slim internal profile. The handguard runs a 1.375-inch inner diameter, and the last three-quarters of an inch is bored out to 1.405 inches. That opens the door for most aftermarket suppressors 1.39 inches in diameter or smaller to tuck up inside the fore-end when you're running an exact 6-inch barrel. It's a clever bit of engineering that keeps your overall package tight without giving up can clearance.
Rail Real Estate on the Angstadt Ultra Light Handguard
Up top you get a continuous Mil-Spec 1913 Picatinny rail with a lightening cut, so mounting optics, backup irons, or a light stays straightforward. M-LOK slots sit at the 3, 6, and 9 o'clock positions for lights, grips, and pressure switches, and there are two QD swivel mounting points for your sling. The handguard fits both forged and billet upper receivers and works with .223/5.56 and 9mm builds, making it a flexible pick across the popular AR pistol calibers.
Installing the Ultra Light 5.5" Handguard
One of the nicer things about this design is that it does not require timing. You torque the barrel nut to spec, slide the handguard over, line it up, and snug down the two bolts. A standard wrench handles the job, so you're not chasing down any proprietary tools to get this one on your build.
Key Specifications
- Manufacturer: Angstadt Arms
- Model: Ultra Light
- Manufacturer Part Number: AA055HGMLT
- UPC: 853427007516
- Length: 5.5 inches
- Weight: 5.3 oz (with hardware)
- Material: Aluminum
- Finish: Mil-Spec Hard Coat Black Anodized
- Mounting System: M-LOK at 3, 6, and 9 o'clock
- Top Rail: Continuous Mil-Spec 1913 Picatinny with lightening cut
- Inner Diameter: 1.375 in (bored to 1.405 in at muzzle end)
- QD Points: 2 QD swivel mounting points
- Caliber Compatibility: .223/5.56 and 9mm
- Design: Free Float, no timing required
- Color: Black
What’s Included
- Ultra Light 5.5" M-LOK handguard
- Barrel nut
- Mounting hardware (bolts)
Frequently Asked Questions
Will a suppressor fit inside the Ultra Light 5.5" handguard?
It can, within limits. The handguard has a 1.375-inch inner diameter with the last three-quarters of an inch bored out to 1.405 inches, which lets most cans 1.39 inches in diameter or smaller tuck up inside. To make it work, you'll want to pair it with an exact 6-inch barrel so the suppressor lines up properly.
Does the Angstadt Ultra Light handguard require timing to install?
No timing needed, which is one of the easier parts of this build. You torque the barrel nut to spec, slide the handguard over it, align it, and tighten the two bolts. A standard wrench gets the job done without any proprietary tools.
What calibers does this handguard work with?
It's designed for .223/5.56 and 9mm builds, so it covers the most common AR pistol calibers. Many builders also run it on .300 Blackout setups. It is not made to fit .308-pattern rifles.
How much does the Ultra Light 5.5" handguard weigh?
It comes in at roughly 5.3 ounces with all the hardware installed, which is about as light as it gets in this length. That weight reduction sits right at the front of your build, so it noticeably improves balance and handling on a short pistol-length AR.







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